Insect and Spider Identification: Please help ID this insect, 3 by RC99

RC99 wrote:
I've been getting bugs bite while I sleep. They are EXTREMELY itchy and get very swollen and have a burning sensation. After searching my bed several times over several days, I could not find any evidence of any bugs whatsoever. Then one afternoon after taking a nap I found a few of these little insects in my bed. I am guessing these are the culprits? These were the best pictures I could get, they are very small. Please let me know if you have any ideas on what these are and if they are the culprits, how to get rid of them. Thank you.